StdLib/Include/Ipf/machine/param.h

   1 /** @file
   2     Machine dependent constants for Intel Itanium Architecture(IPF).
   3
   4     Copyright (c) 2010-2012, Intel Corporation. All rights reserved.<BR>
   5     This program and the accompanying materials are licensed and made available under
   6     the terms and conditions of the BSD License that accompanies this distribution.
   7     The full text of the license may be found at
   8     http://opensource.org/licenses/bsd-license.
   9
  10     THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11     WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13  * Copyright (c) 1990 The Regents of the University of California.
  14  * All rights reserved.
  15  *
  16  * This code is derived from software contributed to Berkeley by
  17  * William Jolitz.
  18  *
  19  * Redistribution and use in source and binary forms, with or without
  20  * modification, are permitted provided that the following conditions
  21  * are met:
  22  * 1. Redistributions of source code must retain the above copyright
  23  *    notice, this list of conditions and the following disclaimer.
  24  * 2. Redistributions in binary form must reproduce the above copyright
  25  *    notice, this list of conditions and the following disclaimer in the
  26  *    documentation and/or other materials provided with the distribution.
  27  * 3. Neither the name of the University nor the names of its contributors
  28  *    may be used to endorse or promote products derived from this software
  29  *    without specific prior written permission.
  30  *
  31  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  32  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  33  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  34  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  35  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  39  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  40  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  41  * SUCH DAMAGE.
  42  *
  43  *  @(#)param.h 5.8 (Berkeley) 6/28/91
  44  *  $NetBSD: param.h,v 1.2 2006/08/28 13:43:35 yamt Exp
  45  */
  46 #ifndef _IA64_PARAM_H_
  47 #define _IA64_PARAM_H_
  48
  49 #define _MACHINE  ia64
  50 #define MACHINE   "ia64"
  51 #define _MACHINE_ARCH ia64
  52 #define MACHINE_ARCH  "ia64"
  53 #define MID_MACHINE MID_IA64
  54
  55 #ifdef SMP
  56 #define MAXCPU    512
  57 #else
  58 #define MAXCPU    1
  59 #endif
  60
  61 #define DEV_BSHIFT  9   /* log2(DEV_BSIZE) */
  62 #define DEV_BSIZE (1<<DEV_BSHIFT)
  63 #define BLKDEV_IOSIZE 2048
  64
  65 #ifndef MAXPHYS
  66 #define MAXPHYS   (64 * 1024) /* max raw I/O transfer size */
  67 #endif
  68
  69 #define UPAGES    4
  70 #define USPACE    (UPAGES * NBPG) /* total size of u-area */
  71
  72 #ifndef MSGBUFSIZE
  73 #define MSGBUFSIZE  NBPG    /* default message buffer size */
  74 #endif
  75
  76 #ifndef KSTACK_PAGES
  77 #define KSTACK_PAGES  4   /* pages of kernel stack */
  78 #endif
  79 #define KSTACK_GUARD_PAGES 0    /* pages of kstack guard; 0 disables */
  80
  81 /*
  82  * Round p (pointer or byte index) up to a correctly-aligned value
  83  * for all data types (int, long, ...).   The result is u_int and
  84  * must be cast to any desired pointer type.
  85  *
  86  * ALIGNED_POINTER is a boolean macro that checks whether an address
  87  * is valid to fetch data elements of type t from on this architecture.
  88  * This does not reflect the optimal alignment, just the possibility
  89  * (within reasonable limits).
  90  *
  91  */
  92
  93 #define ALIGNBYTES              15
  94 #define ALIGN(p)                (((UINT64)(p) + ALIGNBYTES) &~ ALIGNBYTES)
  95 #define ALIGNED_POINTER(p,t)    ((((UINT64)(p)) & (sizeof(t)-1)) == 0)
  96
  97 #define ALIGNBYTES32            (sizeof(INT32) - 1)
  98 #define ALIGN32(p)              (((UINT64)(p) + ALIGNBYTES32) &~ALIGNBYTES32)
  99
 100 #define PGSHIFT       14    /* LOG2(NBPG) */
 101 #define NBPG          (1 << PGSHIFT)  /* bytes/page */
 102 #define PGOFSET       (NBPG-1)  /* byte offset into page */
 103 #define NPTEPG        (NBPG/(sizeof (pt_entry_t)))
 104 /*
 105  * Constants related to network buffer management.
 106  * MCLBYTES must be no larger than NBPG (the software page size), and,
 107  * on machines that exchange pages of input or output buffers with mbuf
 108  * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
 109  * of the hardware page size.
 110  */
 111 #define MSIZE         256   /* size of an mbuf */
 112
 113 #ifndef MCLSHIFT
 114   #define MCLSHIFT    11    /* convert bytes to m_buf clusters */
 115             /* 2K cluster can hold Ether frame */
 116 #endif  /* MCLSHIFT */
 117
 118 #define MCLBYTES      (1 << MCLSHIFT) /* size of a m_buf cluster */
 119
 120 #ifdef GATEWAY
 121   #define NMBCLUSTERS 2048    /* map size, max cluster allocation */
 122 #else
 123   #define NMBCLUSTERS 1024    /* map size, max cluster allocation */
 124 #endif
 125 #endif
 126
 127 /*
 128  * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
 129  * logical pages.
 130  */
 131 #define NKMEMPAGES_MIN_DEFAULT  ((12 * 1024 * 1024) >> PAGE_SHIFT)
 132 #define NKMEMPAGES_MAX_DEFAULT  ((128 * 1024 * 1024) >> PAGE_SHIFT)
 133
 134 /*
 135  * Mach derived conversion macros
 136  */
 137
 138 #define ia64_round_page(x)    ((((EFI_ULONG_T)(x)) + NBPG - 1) & ~(NBPG - 1))
 139 #define ia64_trunc_page(x)      ((EFI_ULONG_T)(x) & ~(NBPG - 1))
 140
 141 #define ia64_btop(x)            ((EFI_ULONG_T)(x) >> PGSHIFT)
 142 #define ia64_ptob(x)            ((EFI_ULONG_T)(x) << PGSHIFT)
 143
 144 #endif /* _IA64_PARAM_H_ */